Rates, Ratios, and Proportions Test Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you convert a fraction to a percentage?

Back

To convert a fraction to a percentage, divide the numerator by the denominator and then multiply by 100.

Front

What is the formula for finding a percentage of a number?

Back

The formula is: (Part/Whole) x 100 = Percentage.

Front

If 3 out of 10 swimmers won a ribbon, what percent won a ribbon?

Back

30%.

Front

What is the ratio of squares to triangles if there are 4 squares and 3 triangles?

Back

4:3.

Front

How do you express a ratio in simplest form?

Back

To express a ratio in simplest form, divide both terms by their greatest common divisor.

Front

What is the ratio of apples to pumpkins if there are 3 apples and 2 pumpkins?

Back

3:2.

Front

How do you find the total number of items in a ratio?

Back

Add the parts of the ratio together to find the total number of items.

Front

What is the ratio of blue marbles to total marbles if there are 6 blue, 8 green, 9 red, and 17 yellow marbles?

Back

3:20.

Front

How do you calculate savings per item when comparing prices?

Back

Subtract the price per item of the cheaper option from the price per item of the more expensive option.